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Grinding machines

BUB 40/1500 CNC
TOS Hostivař
Inventory number: 231632

YOM:1999
Control system Kavalír: K51-1
Max. diameter of grinding: 400 mm
Max. length of grinding: 1500 mm
Max. weight of workpiece: 350 kg
Device for internal grinding: YES
Machine dimensions l x w x h: 4600x1986x1756 mm

BUB 32/2000 NC
TOS Hostivař
Inventory number: 221690

YOM:2002
Control system Siemens: Simatic OP17
Max. diameter of grinding: 320 mm
Max. length of grinding: 2000 mm
Max. weight of workpiece: 350 kg
Device for internal grinding: NO
Machine dimensions l x w x h: 4600x1980x1760 mm

BPH 320 A
TOS Hostivař
Inventory number: 231741

Max. length of grinding: 1000 mm
Max. width of grinding: 320 mm
Max. workpiece height: 350 mm
Spindle bearing grinders: Horizontální
Main motor power: 4 kW
Total input: 6,8 kVA

GRW-4010
Goodway
Inventory number: 241085

YOM:2018
Control system Mitsubishi: M 70
Max. diameter of grinding: 400 mm
Max. length of grinding: 1000 mm
Max. weight of workpiece: 750 kg
Device for internal grinding: NO

BUA 25/630
TOS Hostivař
Inventory number: 231969

YOM:1988
Max. diameter of grinding: 250 mm
Max. length of grinding: 630 mm
Max. weight of workpiece: 60 kg
Device for internal grinding: YES
Main motor power: 4 kW
Machine weight: 3100 kg

KUF 250/750
SZIM
Inventory number: 221744

YOM:1967
Max. diameter of grinding: 250 mm
Max. length of grinding: 500 mm
Main motor power: 7 kW
Machine dimensions l x w x h: 2400x1425 mm
Machine weight: 2500 kg

BPV 700/2
Kovosvit Holoubkov
Inventory number: 221374

Max. length of grinding: mm
Clamping area of table: 2000 x 600 mm
Max. width of grinding: 700 mm
Spindle bearing grinders: Vertikální
Main motor power: 22 kW
Machine weight: 12000 kg

BUC E 63/3000 CNC
Fermat
Inventory number: 201954

YOM:2022
Control system Siemens: Sinumerik 840D Sl - 802 D si - Sinumerik 840D Sl - 802 D si
Max. diameter of grinding: 630 mm
Max. length of grinding: 3000 mm
Max. weight of workpiece: 3000 kg
Device for internal grinding: YES
Main motor power: 18,5 kW

NORMA 75
Schneeberger
Inventory number: 231811

YOM:2001
Control system Fanuc: 160 i - MB control
Max. diameter grinding wheel: mm
Max. dimensions of workpiece: 360x250x250 mm
Table dimensions: 900x260 mm
Travel X-axis: 370 mm
Travel Y-axis: 250 mm

SG-30100 AHD
Unknown
Inventory number: 231697

YOM:2016
Max. length of grinding: 1020 mm
Max. width of grinding: 305 mm
Max. workpiece height: 380 mm
Spindle bearing grinders: Horizontální
Main motor power: 4 kW
Max. weight of workpiece: 400 kg

LISSMAC PRIMA-W-413-RRTT
Bütfering
Inventory number: 221489

YOM:2001
Control system Siemens: Simatic S7
Max. length of grinding: mm
Max. width of grinding: 1300 mm
Max. workpiece height: mm
Spindle bearing grinders: Horizontální
Total input: 58 kVA

BUC 63 A /3000
TOS Čelákovice
Inventory number: 231959

YOM:1988
Max. diameter of grinding: 630 mm
Max. length of grinding: 3000 mm
Max. weight of workpiece: 2500 kg
Device for internal grinding: NO

RS 1000 C CL
Geibel & Hotz
Inventory number: 241138

YOM:2019
Control system B & R:
Max. diameter of grinding: 280 mm
Max. length of grinding: 1000 mm
Max. weight of workpiece: 100 kg
Device for internal grinding: NO
Max. diameter grinding wheel: 400 mm

BUT 63/4000
TOS Hostivař
Inventory number: 241007

Max. diameter of grinding: 63 mm
Max. length of grinding: 4000 mm
Max. weight of workpiece: 2000 kg
Device for internal grinding: NO
Main motor power: 22 kW
Machine dimensions l x w x h: 12650x3100x1870 mm

M1432B / 1000
JAZON
Inventory number: 231716

YOM:2019
Max. diameter of grinding: 320 mm
Max. length of grinding: 1000 mm
Max. weight of workpiece: 150 kg
Device for internal grinding:
Spindle taper: MT 4 .
Machine dimensions l x w x h: 4269 x 1760 x 1545 mm

NOVA 2GR 10/65 CNC
Meccanica Nova
Inventory number: 161558

YOM:1989
Control system Siemens: Simatic S7-300
Max. diameter of workpiece: 65 mm
Max. diameter of grinded hole: 65 mm
Max. depth of grinding: 40 mm
Min. diameter of grinding: 10 mm
Travel X-axis: 40 mm

BRH 20 S
Považské Strojárne
Inventory number: 221209

Max. length of grinding: 400 mm
Max. width of grinding: 230 mm
Max. workpiece height: 460 mm
Spindle bearing grinders: Horizontální

30-15 S 3030
WALDRICH COBURG GmbH
Inventory number: 241066

YOM:1971
Max. length of grinding: 5540 mm
Max. width of grinding: 1500 mm
Max. weight of workpiece: kg
Travel X-axis: 5400 mm
Travel Y-axis: 1700 mm
Travel Z-axis: 1545 mm

BU 25H/750
TOS Hostivař
Inventory number: 231516

YOM:1995
Max. diameter of grinding: 250 mm
Max. length of grinding: 750 mm
Max. weight of workpiece: kg
Device for internal grinding: YES

FFU 1500-50
ABA
Inventory number: 231744

YOM:1993
Max. length of grinding: 1500 mm
Max. width of grinding: 500 mm
Max. workpiece height: 550 mm
Spindle bearing grinders: Horizontální
Machine dimensions l x w x h: 3380x1800x2390 mm
Machine weight: 14000 kg

BU 28 1000
TOS Hostivař
Inventory number: 241249

Max. diameter of grinding: 295 mm
Max. length of grinding: 1000 mm
Max. weight of workpiece: 60 kg
Device for internal grinding: YES
Main motor power: 6,6 kW
Machine dimensions l x w x h: 2800x1450x1480 mm

BUA 25B CNC/750
Cetos
Inventory number: 191326

YOM:2022
Control system Siemens: Sinumerik 840 D
Max. diameter of grinding: 250 mm
Max. length of grinding: 750 mm
Max. weight of workpiece: 250 kg
Device for internal grinding: YES
Distance between centres: 750 mm

SFWR 630
Wotan
Inventory number: 241022

YOM:1982
Max. length of grinding: 300 mm
Max. width of grinding: 630 mm
Max. workpiece height: mm
Spindle bearing grinders: Horizontální
Table dimensions: 630 mm
Machine weight: 3400 kg

BPV 40A/2000
TOS Hostivař
Inventory number: 231565

Max. length of grinding: 2000 mm
Max. width of grinding: 400 mm
Max. workpiece height: 500 mm
Spindle bearing grinders: Vertikální
Main motor power: 70 kW
Machine dimensions l x w x h: 7600 x 2900 x 2890 mm

BPH 20
Považské Strojárne
Inventory number: 202054

Max. length of grinding: 630 mm
Max. width of grinding: 200 mm
Max. workpiece height: 300 mm
Spindle bearing grinders: Horizontální
Clamping area of table: 200 x 630 mm
Max. weight of workpiece: 180 kg

12

Grinding is a technology of precision chip machining. Nowadays, it is possible to reach precision in order of tenths of micrometers and surface roughness of up to 0,2 micrometer. Grinders are thus indispensable in the machinery industry and form an important part of the production process. In general, grinding is a technology that works on the principle of the material removal from the surface layer of the workpiece with fine grains of abrasive material, which are most often bonded to the grinding wheel.   

Grinders with centers and without centers:

Among the cylindrical grinders we differentiate grinders with centers and without centers. These machines are used for grinding internal and external rotating surfaces. 

In case of center grinders the workpiece is usually clamped between centers and rotation is realized using a driver, which is fixed to the surface of the workpiece and tied to headstock. In most cases the workpiece rotates against the direction of rotation of the grinding wheel. Most common models from producer TOS we can mention:

  • BHU,
  • BUB,
  • BUC,
  • BUT,
  • BUA,
  • UB….and many others. 

Grinding is realized using the rotation of the grinding wheel, which grinds the surface of the workpiece as it rotates. Most popular producers of such grinders are: FERMAT, TOS, STUDER, DANOBAT, KELLENBERGER, ERWIN JUNKER, SCHAUDT.

Centerless grinders are also intended for grinding rotary surfaces. The clamping of the workpiece on the machine is different. It is supported with support ruler and the workpiece is placed between two discs – abrasive and drifting. The grinding wheel usually spins faster and does the grinding itself.  The drive disc is most often made of flexible material (for example rubber) and ensures sufficient pressure. 

A special category of grinders are grinders used for grinding of internal rotating surfaces. They works similarly to center grinders. However, the workpiece is just clamped on one side in the chuck or collet so that the hole can be ground from the other side.